This bit of news has been getting around:
http://www.zerohedge.com/news/2014-01-24/bank-run-fears-continue-hsbc-restri...
I don't think it is about a bank run, more likely it is about trying to get everybody using electronic means of payment to feed more information back to big data.
I was really shocked on my last visit to a student bar in London, all the 18 year olds paying for each beer with their card. It seems that younger people are growing into these habits without even thinking about it but the bank in question couldn't wait for older generations to die off and wants to force them into using plastic as well.